Filtering and decanting apparatus.



A PATENTED MAY 26, 1908. W. A. HENDRYX. PILTERING AND DEGANTING APPARATUS.

APPLICATION FILED MIA EH18, 1907- Illllllllll llllll jm 'erc 07".-

" pendent ofthe filteringdevices for decanting illustrated as conical.

angle iron 4 or otherwise held, and serving to shown in Fig. 1 each of these cells comprises with longitudinal recesses 8.

UNI E STATES PATENT OFFICE.

WILBUR ALSON HENDRYX,

OF DENVER, COLORADO.

surname "AND nncan'rme APPARATUS.

Specification of Letters late'nt.

Patented May 26, 1908.

Original applicationfiled August 1906, Serial No. 329,811. Divided and this application filed March 18, 1907.

1 Serial No.

To all whom it may concern:

Be it known that I, WILBUR ALsoN HEN- DRYX,-a citizen. of the United States, residing at Hotel Metropole, in the city ofDenver, in the county of Denver and State of Colorado, have invented new and useful Improvements in Filtering and Decanting Apparatus, of which the following is a specification.

The object of this invention is to provide an apparatus for the treatment of mixtures of ore and solvent liquor, such as ore pulp, for the separation therefrom of a clear metalbearing solution in an expeditious manner.

In its preferred form the apparatus comprises a tank provided with one or more filtering devices, and also with means indeor withdrawing clear solution.

The apparatus is adapted for the treatment of a variety of materials and is capable of use in' several ways in accordance with the character of the particular material under reference is madeto the accompanying drawing wherein? Figure 1 is a central vertical section of one form of apparatus, and Fig. 2 is a central vertical section, on a somewhat enlarged scale, of a modified form of filter.

Referring to the figures, 1 re resents a tank which may be of any suitable shape or di-' mensions, having a converging bottom 2, Within the tank and preferably just above the bottom -2 are arranged transverse timbers3, carried by an support a plurality of filters or filter cells 5 shown as four in number. In the form a rectangular framework 6, conveniently of wood, thebottom member 7 being provided Filter bags 9, of canvas or other material, are drawn over the frame 6 and their loweropen ends secured by cleats 1O engaging the recesses 8 above mentioned. Each filter-cell has a bottom discharge 11, the several cells being shown as connected to a common'main 12 extending through the tank wall and terminating in a cook 13.

Inorder to keep the walls of the cells distended under the weight of the material in the tank I prefer to provide in each cell a -As a modified means for supporting the filter walls I have shown in Fig. 2 a spacing strip 15, conveniently of wood, of which any required number may be used, the several strips being cut away at the sides as shown to provide the maximum racticable filtering area. Or the cells may e filled or packed with strips,- blocks or pieces of wood or other material which may be of irregular shape and Ofununiform size, the essential feature being the provision of a filling which shall .be capable of supporting the walls or preventing substantial dlsplacement thereof while pro.-

viding a free passageway for the filtered liqui 16 represents a filtering layer, preferably of canvas, disposed over the conical bottom 2 of the tank and shown as secured by upper and lower cleats orstrips 17. Beneath this layer of canvas 16, I have shown a spacing layer or filling 18, whichmay also consist of cocoa matting. A valved pipe 19 communicates with the space beneath the filter 16.

The tank 1 is also provided with one or more cocks 20, disposed at various levels and serving to draw off clear but unfiltered solution as hereinafter described; andan outflow pipe 21 near the top. A sludge gate 22.permits the quick discharge of the contents of the tank. v 1 a The mode of operation of the-apparatus will depend upon the character of the material treated, and more particularly upon the comparative readiness with which thev material may be filtered or settled. A pulp carrying a certain quantity of liquid is run into the tank, and the valves 13 and 19 are opened, permitting the outflow of the clear solution which has passed through the filters 9. and 16. When the pulp is of such nature that it settles'leaving a substantially clear liquor, one or more of the decanting cocks 20 is opened and such clear solution withdrawn. After the greater portion-of the solution has beenseparated by filtration or decantation' or both, wash water or barren solution is forced through one or both of the openings 13 filters,

and 19 and in reverse direction through the and is subsequently recovered as above. After the recovery of the values is substantially complete the residual pulp is sluiced out. through 22.

Another. mode of operation which is often applicable consists in passing the Wash Water, barren solution or other leaching agent through pipe 19, thence through the filter 16 and upwardly'through the ore pul and to permit it to be decanted or to over ow at 21.

After the metal bearing solution has been displaced, the introduction of water or solution at 19 is discontinued, and the solution in the tank is permitted to flow out through the several filters, any clear portions being preferably decanted as above described.

After being fully Washed the pulp is discharged at 22 as before, and the tank is then ready for recharging. It Will-be understood that in operating in this manner the filter 16 serves as a very effective distributer for the infiowing liquid, While the filter cells 5 serve to distribute the outflowing liquid. By this even distribution of both inflowing and out flowing liquid any tendency to the producuids from pulp or solids.

The filter cell described herein is claimed in my copending application Serial No.- 329,811, filed August 9, '1906; of which the present application is'a division. I claim: v 1. Ap aratus for .treatin ores comprising .a tank aving a bottom lscharge for orepulp, afilter disposed above the bottom of a tank the tank and providing a'clo'sed space surrounding said' discharge, a pipe communicating with said space, a filter cell in said tank, and an independent outlet for said filtcr cell.

2. Apparatus for treating ores comprising a'tank having aconverging bottom and a central discharge for ore-pulp, a filter disposed above the bottom of the tank and pro' viding a closed space surrounding said-discharge, a pipe communicating with said space, a filtercell in said tank, and an independent outlet for'said filter cell.

3. Apparatus for treatin ores comprising a tank having a bottom ischarge for orepulp, a filter disposed'above the bottom of the tank and providing a closed space surrounding said discharge, a pipe communicating with said s ace, a filter. cell in said tank, an indepen en't outlet for said filter cell, and an auxiliary solution outlet in the upper portion of said tank;

4. Ap aratus for treatin a tank aving a bottom ischarge for orepulp, a filter disposed above the'bottom of the tank. and providing a closed space surrounding said discharge, a pipe communicating with said space, a filter cell in saidtank, an independent outlet for said filter of said tank.

' 5. Ap aratus for treatin ores comprising avinga bottom ischargeifor orepulp, .a filter'disposed above the'bottom of the tank and providing a closed space sur-. rounding said discharge, a pipe communicating with said space, a lurality of filter cells 111 said tank, and in ependent outlets for said filter cells. I

Intestimony whereof I aflix my signature in presence of two witnesses.

WILBUR ALSON' HENDRYX. Witnesses: I

posed at di erent -levels in the upper portion THEODOBA WELLS, CHAs'R. DAVIES.

ores comprising cell, and'a lurality of auxiliary outlets dis- 

